Combined fluid-pressure regulator and safety valve.



A. L. SMYLY. I COMBINED FLUID PRESSURE REGULATOR AND SAFETY VALVE. APPLICATION men MAR. 23. 1912.

1,161,990. I I PatentedNov. 30, 1915.

I [Will TED STA ARTHUR L. SMYLY, OF CHICAGO, ILLINOIS.

' COMBINED FLUID-PRESSURE REGULATOR AND SAFETY VALVE.

Specification of Letters Patent.

Application filed march 23, 1912. Serial No. 685,833.

T 0 all whom it may concern Be it known that I, ARTHUR L. SMYLY, a citizen of the United States of America, and resident of Chicago, Cook county, 'Illinois, have invented a certain new and useful Improvement in Combined Fluid-Pressure Regulator and Safety Valves, of whlch the following is a specification.

My invention contemplates a combine fluid pressure regulator and safety valve for use in ordinary fuel gas or lighting or other similar systems.

My invention also contemplates a safety or emergency valve which closes under abnormal pressure, and which is also adapted to c ose under the influence of heat in case of fire.

To these and other useful ends, my invention consists in matters hereinafter set forth and claimed. I

In the accompanying drawings: F lgure l is a side elevation partly in vertical section, of a combined fluid pressure regulator and safety valve. Fig. 2 is an enlarged section on line 22. in Fig. 1. Fig. 3 is an enlarged section on line 33 in Fig. 2. Fig. 4 is a perspective of the safety valve,

As thus illustrated, my invention comprises a body A, and a cap plate B, together with an interposed diaphragm C. These are well known and do not require further description.

The usual valve D is carried on the pivoted arm 03 and operated by the diaphragm C in the ordinary and well knownmanner. The body A has a horizontal wall a with. a hard metal valve seat a therein, the upper end of the seat being sharp to engage the soft face of said valve. This valve seat is surrounded by the boss (1 which is integral with the body, and which is threaded inter- .nally to receive the inlet pipe E. The gas passes upwardly through this valve seat (1 and escapes through the outlet pipe F. The pressure acts on the diaphragm in the ordinary way and causes the valve D to close the passage more orless, thus regulating the pressure in the pipe F.

To prevent excessive flow, a safety valve G is inclosed in the boss a and provided at its top with a conical portion 9 that enters the lower end of the hole in the valve seat a to cut off the gas. This valve G is shaped hke an lnverted cup and rests upon the top of the thimble 9 which is screwed into the said boss, having a lower'end flange g that is threaded for this purpose. By means of this support orthimble 9 in the manner shown, the closing of the safety valve can be adjusted, as the distance or extent of movement thereof can be varied'by moving the said thimble up and down. The as passes upward through this thimble, lifts the valve G, and-if the flow is excessive the portion 9 engages the lower end of the valve seat a to stop the flow entirely.

To enable the valve to close in case of fire, a vertical post or center pin g is held in a spider 9 the upper end of said post being immediately below the portion 9 of the valve. Said post has an upper shoulder 9 and a fusible washer g, which latter may be of solder, and a spring 9 is interposed between the shoulder g and the top of said spider. When the washer g melts, the post or pin g is moved upward by the spring -9 with the result that the valve closes quickly. Thus in case of fire the valve shuts off the further flow of gas to the service pipe.

The two valves are combined in one unitary structure, and work at opposite ends .of the same valve seat. This seat can be removed and renewed when worn or. impaired.

If desired, the valve G can have holes 9 in the top thereof for the escape of the gas. Thus the gas can pass upwardly without lifting the valve, if the flow is normal; but when the flow increases, then the valve lifts and stops the flow.

While the valve G is in normal position,

no gas passes out from below the lower edge thereof. However, when the valve rises, the

gas then flows down and out fro-m under the lower edge of the inverted cap, thus suddenly increasing the pressure on top of the valve. This prevents closure of the valve G by ordinary or slight fluctuations of the pressure. In other words, it is desirable that this valve close only in case of a serious Patented Nov. 30, 1915. Y

increase of pressure, such as might be dangerous. The valve D regulates the flow and keeps it steady. The valve G is purely an emergency device.

I do not limit myself to the exact con struction shown and described.

What I claim as my invention is:

1. The combination of a fluid pressure safety valve adapted to be closed by abnormal flow, being free to move with the flow, and heat controlled means for closing said valve, said means being inoperative to reopen said valve. 2. A fluid pressure safety valve adapted to be closed by abnormal flow, being free to move with the flow, and heat controlled means for closing said valve, said means comprising a fusible retaining member, and

'- a spring to be released by the fusing of said member to close the valve, said valve being operative independently of said means.

3. In a gas apparatus, a valve for stopping the flow of gas, being free to move with the flow or pressure, and means automatically operative in case of fire for closing said valve, said means being inoperative to reopen said valve.

4. In a gas apparatus, a safety valve comprising a hollow support, a cup like valve resting up-side down on said support, and a valve seat above for said valve, the top of said valve having openings for the normal flow of gas, whereby only abnormal flow raises the valve against said seat.

5. A combined fluid pressure regulator and safety valve comprising a casing, a regulating .valve in the casing, a diaphragm controlling said valve, said casing having a' horizontal wall provided with a Vertical passage controlled by said valve, a boss depending from said wall, around said passage, and a safety valve in said boss for controlling the lower end of said passage, the said safety valve including a hollow member screwed into and fully inclosed by said boss, and an inverted cup resting on the upper end of said member, said cup having openings for the normal flow of gas, and a valve seat for the upper end of said cup.

6. In combination with a gas device, a safety valve therefor, combined therewith, controlling the admission of gas thereto, said valve comprising a hollow support with imperforate sides, an inverted cup having a flat wall resting on the upper edge of said support, thereby shutting off the flow of gas, said wall having openings for the passage of the gas, a valve seat, and means on said wall for engaging said seat.

7. In combination with a gas device, a safety valve therefor, combined therewith, controlling the admission of gas thereto, said valve comprising ahollow support with imperforate sides, an inverted cup having a flat wall resting on the upperedge of said prising a tapered portion adapted to enter the opening of said seat.

8. In combination with a gas device, a safety valve therefor, combined therewith, controlling the admission of gas thereto, said valve comprising a hollow body, a support removably held in said body, open at both ends to form a passage for 'the gas, a floating valve member on said support, adapted to rise therefrom with an abnormal flow of gas, and a valve seat at the top of said body, disposed in position to be engaged by said member, and means on the lower end of said body for making connection with a gas pipe.

9. A gas system provided with an automatic safety valve disposed in the path of flow, adapted by the initial upward movement thereof to increase the passage for the gas below the same, and comprising means of adjustment for varying the normally open position thereof.

10. A gas system provided with an automatic safety valve disposed in the path of flow, adapted by the initial upward movement thereof to increase the passage for the gas below the same, and comprising means of adjustment for varying the normally open position thereof, said valve including a floating member, a seat engaged by said member, to shut off the flow of gas, and said means of adjustment including a hollow support for said member.

11. A gas valve comprising a hollow body, an upwardly closing valve in said body, a support for said valve, providing a passage for the gas, and means for engaging the under surface of the valve, serving to center the latter on said support.

12. A gas valve comprising a hollow body, an upwardly closing valve in said body, a support for said valve, providing a passage for the gas, and means for engaging the under surface of the valve, serving to center the latter on said support, together with a spring for actuating said means, and provisions for normally holding said spring under tension.

13. A gas valve comprising a hollow body,

an upwardly closing valve in said body, a

- provisions whereby gas escapes around the lower edge of said cup'when itrises, to increase the pressure above, but not while at rest.

i 16. A gas valve comprising a hollow body, anupwardly closing valve in said body, and a hollow support for said valve, the latter being in the form of an inverted cup, having provisions whereby gas escapes around the lower edge of said cup when it rises, to

increase the pressure above, but not while at rest, and a gas governor having a casing formed integral with said body, provided with means for controlling the gas after passing said valve.

17. A gas valve comprising a hollow body, an upwardly closing 'valve in said body, and a hollow support for said valve, the latter being in the form of an inverted cup, having provisions whereby gas escapes around the lower edge of said cup when it rises, but not while at rest, and means for holding the valve closed.

18. A gas valve comprising an inverted cup provided with a centrally located engaging portion on the top wall thereof, a valve seat above said inverted cup, and a vertical post below the cup, having its upper end adapted to engage said portion, whereby the said inverted cup is held against lateral displacement.

'19. A gas valve comprising an inverted cup provided with a centrally located engaging portion on the top wall thereof, a valve seat above said inverted cup, and a vertical post below the cup, having its upper end adapted to engage said portion, whereby the said inverted cupis held against lateral displacement, said portion having a cone-shaped cavity, and said post being pointed to enter said cavity and engage the apex thereof.

20. A as valve comprising an inverted cup provided with a centrally located engaging portion on the top wall thereof, a valve seat above said inverted cup, and a vertical post below the cup, having its upper end adapted to engage said portion, whereby the said inverted cup is held against lateral displacement, and an adjustable support for said post, extending upwardly into said cup, providing a passage for the gas.

21. A gas valve comprising an inverted cup provided with a centrally located engaging portion on the top wall thereof, a valve seat above said inverted cup, and a vertical post below the cup, having its upper end adapted to engage said portion, whereby the said inverted cup is held against lateral. displacement, and a spring for actuating said cup to close the valve.

22. A gas valve comprising an inverted cup prov1ded with a centrally located engaging portion on the top wall thereof, a

valve seat above said inverted cup, and a vertical post below the cup, having its upper enda'dapted toengage said portion, whereby the said inverted cup is held against lat eral displacement, and heat responsive means for closing. the valve.

23. A gas. valve comprising an inverted cup provided with a centrally located engagingportlon on' the top wall thereof, a

valve seat above said inverted cup, and a vertical post below the clip, having its upper end adapted to engage said portion, whereby the said inverted cup is held agai st lateral displacement, and said cup having an opening in the top thereof.

24. In a fluid pressure safety valve, a valve seat, a center pin axially alined with said seat, a valve on one end of said pin to engage said seat, a guide for said pin, a spring to actuate said pin endwise and close said valve against said seat, and fusible means engaging said pin to hold said spring under compression and said valve in open position, said valve and spring being disposed between said guide and the valve seat.

25. In a fluid pressure safety valve, a

valve seat, a center pin axially alined with said seat, a valve on one end of said pin to engage said seat, a guide for said pin, a spring to actuate said pin endwise and close said valve against said seat, and fusible means engaging said pin to hold said spring under compression and said valve in open position, said valve and spring being disposed between said guide and the valve seat,

said valve being free to rise with thefluid pressure while said pin remains stationary in said guide. 7

26. In a fluid pressure safety valve, a valve seat, a center pin axially alined with said seat, a'valve on one end of said pinto engage said seat, a guide for said pin, a spring to actuate said pin endwise and close said valve against said seat, and fusible means engaging said pin to hold said spring under compression and said valve in open position, said valve and spring being disposed between said guide and the valve seat, said valve being in the form of an inverted cup having a cone-shaped portion to engage the seat.

27. In a fluid pressure safety valve, a valve seat, a center pin axially alined with said seat, a valve on one end of said pin to engage said seat, a guide for said pin, a

spring to actuate said pin endwise and close said valve against said seat, and fusible means engaging said pin to hold said spring under compression and said valve in open position, said valve and spring being" disposed between said guide and the valve seat, and a body inclosing all of said elements, said guide being screwed into said body.

Signed by me at Chicago, Illinois, this 15th day of March, 1912.

' ARTHUR L. SMYLY.

Witnesses:

S. L. GLovER, GEO. F. SCHMIDT. 

